CN102140599A - Method for synthesizing particle reinforced composite material under composite action of current and magnetic field - Google Patents
Method for synthesizing particle reinforced composite material under composite action of current and magnetic field Download PDFInfo
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Abstract
The invention relates to the technical field of preparation of particle reinforced aluminum-based composite materials, in particular to a method for synthesizing a particle reinforced aluminum-based composite material through direct reaction of a melt under the composite action of current and a magnetic field. The method is mainly characterized in that: in the process of synthesizing the particle reinforced aluminum-based composite material by a direct melt reaction method, current is introduced into the melt and the magnetic field is applied so as to promote melt reaction and control the appearance, size, motion and distribution of particles through electromagnetic oscillation effect generated by interaction of the current and the magnetic field. In the scheme, alternating current and a static magnetic field can be composited, and direct current and an alternating magnetic field also can be composited. By the method, the synthesis reaction rate and yield can be obviously improved, obvious effects of controlling the appearance of the particles and promoting dispersion are achieved, and the method is suitable for preparing high-performance particle reinforced composite materials on an industrial scale.
Description
Technical field
The present invention relates to the preparing technical field of particle enhanced aluminum-based composite material, specially refer to a kind of under electric current and magnetic field compound action the synthetic method for preparing particle enhanced aluminum-based composite material of melt direct reaction.
Background technology
Particle enhanced aluminum-based composite material becomes a kind of application type material more and more widely gradually because of having compound constitutional features and good physics and chemistry and mechanical property; The preparation method of particle enhanced aluminum-based composite material is more sophisticated to mainly contain two kinds: add enhanced granule method and reaction in method of formation.
At present, the fusant reaction synthesis method is the important method of preparation particle enhanced aluminum-based composite material, and this method is by adding reactant (based on salt or oxide compound) in melt, forms enhanced granule mutually by reactant with in-situ chemical reaction between aluminum substrate; The advantage that this method prepares particle enhanced aluminum-based composite material be that particle is not contaminated with basal body interface, the phase interface wettability is good, the power that combines strong and technological process relative simple etc., therefore be subjected to the attention of research both at home and abroad day by day.
The subject matter that the fusant reaction synthesis method prepares the particle enhanced aluminum-based composite material existence is the difficult control of reaction process, shows that speed of response and efficient are difficult to improve, and the particle wild phase of generation easily reunion is grown up, and has a strong impact on the industrial-scale production and the application of material; Utilize outer field action can improve the thermodynamics and dynamics condition of in-situ synthesized reaction, play the effect that promotes that reaction in carries out, simultaneously, outer field action can be controlled too growing up of particle phase or poly-partially cluster phenomenon, therefore, outside after the match the original position synthesizing aluminum-based composite material more and more be subjected to investigator's attention.
In the prior art, proposed employing electromagnetic field, ultrasonic field and combination thereof and prepared particles reiforced metal-base composition outward after the match; These prior aries mainly comprise: Chinese patent: open day of CN 1676641A(: 2005.10.5, denomination of invention: the magnetic chemical reaction in-situ synthesizing method of preparation metal-base nanometer composite material) propose to carry out In-situ Magnetization under magnetic field (steady magnetic field, alternating magnetic field and pulsed magnetic field) and react synthetic; Chinese patent: open day of CN 1958816(: 2007.05.09, denomination of invention: ultrasound method prepares endogenous granular reinforced aluminum base composite surface material technology) propose to utilize power ultrasonic to prepare endogenetic particle enhancing (Al
3The Ti phase) aluminium base composite surface material makes wild phase be evenly distributed on the top layer of matrix, and the interface is in conjunction with better; Chinese patent: CN 101391290A, a kind of magnetic field and ultrasonic field coupling prepare the method for metal-base composites down, and proposing in position, reaction process applies magnetic field and ultransonic coupled field; Chinese patent CN101391291A proposes the method for metal matrix composition home-position synthesizing under a kind of combined electric magnetic field, and the reaction in building-up process of melt is applied magnetic field by rotatingfield and travelling-magnetic-field combination.
From prior art report and production practice as can be known, apply electromagnetic field, ultrasonic field and formation coupling outfield thereof in the process of the synthetic preparation of fusant reaction particle enhanced aluminum-based composite material, have grain refine and dispersion effect preferably; From the reaction characteristics of the synthetic aluminum based composite material enhanced by granules in situ of melt direct reaction as can be known: the reaction essence between reacting salt and the metal melt is the reaction between charged ion particle and the metal melt, wherein the behavior of charged ion particulate is to the speed of reaction in, productive rate and particulate are separated out, grow up and behavior such as distribution has decisive influence, therefore, in melt, directly feed electric current in the reaction in building-up process and melt is applied magnetic field, the electromagnetic oscillation effect of utilizing electric current and magnetic field interaction to form directly acts on and participates in fusant reaction synthetic melt, charged particle (reacting salt) and particle phase, speed to the control reaction in, productive rate and particulate are separated out, grow up and distribution is a kind of very promising method, be expected to solve the difficult control of reaction process that the synthetic preparation of present melt direct reaction particle enhanced aluminum-based composite material exists, speed of response and efficient are difficult to improve, the particle phase pattern and the distribution that generate are difficult to key issues such as control.
Summary of the invention
The objective of the invention is: a kind of novel method of synthesizing particle enhanced aluminum-based composite material under electric current and magnetic field compound action is provided, solving present fusant reaction synthesis method prepares speed of response and the efficient that particle enhanced aluminum-based composite material exists and is difficult to improve, the particle wild phase that the generates key issue such as grow up of easily reuniting realizes the technical scale preparation of high-performance particle enhanced aluminum-based composite material and uses.
The method that realizes the object of the invention is: feed electric current and simultaneously melt is applied magnetic field in melt in melt direct reaction legal system is equipped with the reaction building-up process of aluminum based composite material enhanced by granules in situ, can adopt the combination of alternating current and static magnetic field, also can adopt the combination of galvanic current and alternating magnetic field; The electromagnetic oscillation effect of utilizing the interaction between electric current and the magnetic field in melt, to produce, electromagnetic oscillation effect generate energy in melt rises and falls and the motion momentum rises and falls, improve the thermodynamics and kinetics condition of in-situ synthesized reaction, improve speed of reaction and productive rate, particularly promote migration of reaction in intermediate ion and particle forming core, control particulate pattern, size and improve the particulate dispersiveness, the final control fusant reaction of realizing carries out and controls the purpose of particle size and behavior.
Below in conjunction with synoptic diagram (see figure 1) of the present invention, illustrate and realize that concrete scheme of the present invention is as follows:
A kind of method of synthesizing particle enhanced aluminum-based composite material under electric current and magnetic field compound action mainly may further comprise the steps:
A) in the reaction synthesising container 1 that the thermal insulation fire-resistant material is made the melting of matrix metal aluminum or aluminum alloy, refining are adjusted to reacting initial temperature after pulling out slag, adding can generate enhanced granule reactant mutually with the molten aluminium reaction in, and stirs;
B) electric current of input melt is introduced by the electrode 3 of two parallel insertions that are installed in bottom, molten bath and top, molten bath respectively, magnetic field 5 is installed in the outside of reaction synthesising container 1, electrode is inserted melt, connect the power supply 4 and the magnetic field 5 of input melt electric current then successively, and adjust current parameters and magnetic field parameter to setting range;
C) method of synthetic particle enhanced aluminum-based composite material under electric current of the present invention and the magnetic field compound action, a kind of scheme is that employing exchange current and static magnetic field are compound, therefore, the electric current that feeds in the melt is an exchange current, strength of current is 10-1000A, power frequency is 50-500Hz, and static magnetic field is adopted in corresponding with it magnetic field, and the intensity in magnetic field is 0.1-5.0T;
D) method of synthetic particle enhanced aluminum-based composite material under electric current of the present invention and the magnetic field compound action, another kind of scheme is that employing galvanic current and alternating magnetic field are compound, therefore, the electric current that feeds in the melt is a galvanic current, strength of current is 10-1000A, alternating magnetic field is adopted in corresponding with it magnetic field, and the intensity in magnetic field is 0.02-2.0T, and the frequency in magnetic field is 50-500Hz;
E) time of electric current and magnetic field compound action processing melt is 2-10min, and question response finishes, and closes the power supply 4 and the magnetic field power supply of received current successively, and melt is poured into a mould after leaving standstill teeming temperature, makes matrix material.
Adopt key feature of the present invention to be: in the reaction building-up process of the synthetic aluminum based composite material enhanced by granules in situ of melt direct reaction, in melt, to feed electric current, simultaneously melt is applied magnetic field treatment, i.e. synthetic compounding flux under electric current and magnetic field compound action; When adopting exchange current and static magnetic field compound action, the electric current that feeds in the melt is an exchange current, and strength of current is 10-1000A, and power frequency is 50-500Hz, and static magnetic field is adopted in corresponding with it magnetic field, and the intensity in magnetic field is 0.1-5.0T; When adopting galvanic current and alternating magnetic field compound action, the electric current that feeds in the melt is a galvanic current, and strength of current is 10-1000A, and alternating magnetic field is adopted in corresponding with it magnetic field, and the intensity in magnetic field is 0.02-2.0T, and the frequency in magnetic field is 50-500Hz.
Compared with prior art the present invention has the following advantages and effect:
1) the present invention reacts in position and directly feeds electric current in the building-up process and melt is applied magnetic field in melt, the electromagnetic oscillation effect of utilizing electric current and magnetic field interaction to form directly acts on participates in reaction synthetic melt, charged particle and particle mutually, electromagnetic oscillation acts on the fluctuation of energy that produces in the melt and reaches charged particle and the fluctuating of particulate kinergety, improved the thermodynamics and dynamics of reaction in, improve the speed and the productive rate of reaction, improved particulate motion and dispersion effect;
2) under electric current and magnetic field interaction, synthesising reacting time shortens, the synthetic after the match outward 12-20min of 20-30min when not applying the outfield and other form of employing, shorten to 10-12min, this thermodynamics and kinetics of reaction in that mainly has been the electromagnetic oscillation effect improving, thus speed of reaction improved;
3) adopt the present invention, the recovery rate of particle phase is that ultimate yield is increased to more than 95%, has improved the utilization ratio of reacting salt, reduces reacting salt consumption and has reduced the quantity of slag.Not applying magnetic field is, particle phase recovery rate is generally at 80-85%, and the outfield of other form of available technology adopting, its recovery rate also is difficult to surpass 90%;
4) electric current of importing among the present invention is coupled with the action of a magnetic field that applies, and its effect mutual superposition is complementary to be strengthened, and applies electric current or magnetic field has the effect of getting twice the result with half the effort than single, all reduces thereby current draw and magnetic field are consumed, and helps reducing the consumption of the energy;
5) adopt equipment of the present invention ripe, relative low price, simple to operate, particularly the present invention can handle the large vol melt, is the method that a kind of suitable technical scale prepares the high-performance particulate reinforced composite.
Description of drawings
The synoptic diagram of synthetic particle enhanced aluminum-based composite material under Fig. 1 pulsed electrical field;
Caption: 1 reaction synthesising container; 2 Composite Melt; 3 electrodes; The power supply of 4 received currents; 5 magnetic fields
Fig. 2 embodiment 1 makes the sem photograph of matrix material;
Fig. 3 embodiment 2 makes the sem photograph of matrix material.
Embodiment
The invention will be further elaborated below in conjunction with embodiment; Embodiment only is used to illustrate the present invention, rather than limits the present invention by any way.
Embodiment 1: preparation ZrB
2
Particle enhanced aluminum-based composite material
Starting material: matrix metal: aluminium alloy; Pressed powder: potassium fluozirconate and potassium fluoborate pulvis (purity is 99%), the refining air release agent and the agent of skimming;
Electric current and magnetic field: electric current adopts alternating current, strength of current 100A, and frequency 55Hz, magnetic field is static magnetic field, magneticstrength 1.0T.
Preparation process is as follows:
(1) at first carry out Metal Melting and powder preparing:
Aluminium alloy 50Kg melts in the crucible type resistance furnace and is warmed up to 900 ℃, outgases, skims; Agents useful for same is all 200 ℃ of down fully oven dry, and wherein reacting salt grinds to form fine powder (granularity is less than 100
μM), stand-by after the weighing, the weight that reacting salt adds be weight metal 20%(wherein the weight ratio of potassium fluozirconate and potassium fluoborate be: 44:56).
(2): the synthetic preparation of fusant reaction Composite Melt:
After melt temperature is qualified, carry out initial refining, refining is good and meet in the fusant reaction synthesizer 1 of melt impouring band heat insulation function of temperature requirement (900 ℃), in melt, add the solid reactant powder, and stir with agitator; Electrode 3 is inserted in the Composite Melt, power-on 4, the adjustment current parameters is: 100A, 55Hz opens magnetic field 5 then, regulates magnetic field parameter to be: magneticstrength 1.0T; The time that electric current and magnetic field act on simultaneously is 10min; Close electric field and magnetic field power supply then, after leaving standstill the cast 750 ℃ time of the Composite Melt that makes is made matrix material.
Fabric analysis is done in sampling, Fig. 2 is the sem photograph that makes matrix material of present embodiment, as seen from Figure 2, the enhanced granule size belongs to nanometer/submicron and strides the size granule reinforced composite at 50-200nm in the matrix material, and granule-morphology is complete, interface cleaning between particle and matrix is clear, be evenly distributed, illustrate that the present invention has extraordinary granule-morphology, size and the control effect that distributes, these features all help improving the over-all properties of material; In addition, at this reaction system, reaction times 20 minutes when not applying the outfield shorten to 10 minutes, and combined coefficient doubles, and the quantity of particle phase is significantly increased, and improves approximately about 10%, illustrates that the speed of reaction and productive rate improve.
The matrix material that the present invention makes is handled through T4, measured the room temperature tensile performance of material, and with do not apply the outfield and apply other form outfields, and the material that makes under the identical condition of other conditions and present embodiment has carried out performance comparison, it the results are shown in Table 1.
Table 1 embodiment 1 makes the performance of composites contrast with the other technologies scheme
| Index | The present invention | No outfield | Electromagnetic field | Ultrasonic field |
| Yield strength, MPa | 365 | 315 | 345 | 350 |
| Tensile strength, MPa | 540 | 370 | 480 | 490 |
| Unit elongation, % | 15.5 | 11.5 | 13.5 | 14.0 |
Therefore, summary uses the outstanding feature of this invention to be:
1) from microtexture, particulate pattern rounding, size are evenly tiny, and are evenly distributed, i.e. granule-morphology, size and distribution is effectively controlled;
2) from reaction efficiency, reaction times 20 minutes when not applying the outfield shorten to 10 minutes, and the quantity of particle phase is significantly increased, and illustrates that the speed of reaction and productive rate improve;
3) from material room temperature tensile property, the mechanical property of materials significantly improves.
Embodiment 2: preparation (Al
3
Zr
(s)
+ Al
2
O
3 (s)
) particle enhanced aluminum-based composite material
Starting material: matrix metal: aluminium alloy; Pressed powder: industrial carbonic acid zirconium (Zr (CO
3)
2) pulvis (purity is 99.20%), the refining air release agent and the agent of skimming;
Reaction in equation: 7Al
(l)+ Zr (CO
3)
2 (s)=Al
3Zr
(s)+ 2Al
2O
3 (s)
Particle wild phase: Al
3Zr
(s)And Al
2O
3 (s)
Electric current and magnetic field: electric current adopts galvanic current, strength of current 100A, and magnetic field is alternating magnetic field, magneticstrength 0.5T, field frequency are 55Hz.
Preparation process is as follows:
(1) at first carry out Metal Melting and powder preparing:
Aluminium alloy 50Kg melts in the crucible type resistance furnace and is warmed up to 900 ℃, outgases, skims; Agents useful for same is all fully dried down at 300 ℃, wherein Zr (CO
3)
2(granularity is less than 100 to grind to form fine powder
μM), stand-by after the weighing, Zr (CO
3)
2The weight that adds is 10% of weight metal.
(2): the synthetic preparation of fusant reaction Composite Melt:
After melt temperature is qualified, carry out initial refining, refining is good and meet in the fusant reaction synthesizer 1 of melt impouring band heat insulation function of temperature requirement (900 ℃), in melt, add solid reactant Zr (CO
3)
2Powder, and stir with agitator; Electrode 3 is inserted in the Composite Melt, open dc power supply 4, the adjustment current parameters is: output current intensity is 100A; Open magnetic field 5 then, the adjusting magnetic field parameter is: magneticstrength 0.5T, field frequency 55Hz; The time that galvanic current and alternating magnetic field act on simultaneously is 5min; Close galvanic current power supply and magnetic field power supply then, question response leaves standstill teeming temperature after finishing, and cast makes matrix material in the time of 750 ℃.
Sampling analysis, particle size are at 50-200nm, and most of particle size is controlled at about 100nm, belong to nanometer/submicron and stride the size granule reinforced composite, particularly granule-morphology is complete, and the interface cleaning between particle and matrix is clear, and these features all help improving the over-all properties of material; Fig. 3 is the sem photograph that present embodiment makes matrix material;
Use the outstanding feature of this invention to be: particulate pattern rounding, size are evenly tiny, and be evenly distributed, be that pattern is controlled, in addition, at this reaction system, reaction times 25 minutes when not applying the outfield shorten to 10 minutes, and the quantity of particle phase is significantly increased, and illustrates that the speed of reaction and productive rate improve.
Embodiment 3: preparation ZrB
2
Particle enhanced aluminum-based composite material
Starting material that present embodiment is used and preparation process and embodiment 1 are identical, and different is that the electric current that adopts is different with the parameter in magnetic field; Used electric current is an exchange current, and the parameter of exchange current is: strength of current 500A, and power frequency is: 200Hz; Used magnetic field is static magnetic field, and the magnetic induction density in magnetic field is 2T, and the time that electric current and magnetic field act on simultaneously is 5min.
Embodiment 4: preparation (Al
3
Zr
(s)
+ ZrB
2 (s)
) the particle reinforced Al matrix composite
Starting material that present embodiment is used and preparation process and embodiment 2 are identical, and different is that the electric current that adopts is different with the parameter in magnetic field; Used electric current is an exchange current, and the parameter of exchange current is: strength of current 1000A, and power frequency is: 50Hz; Used magnetic field is static magnetic field, and the magnetic induction density in magnetic field is 0.1T, and the time that electric current and magnetic field act on simultaneously is 5min.
Embodiment 5: preparation (Al
3
Zr
(s)
+ ZrB
2 (s)
) the particle reinforced Al matrix composite
Starting material that present embodiment is used and preparation process and embodiment 2 are identical, and different is that the electric current that adopts is different with the parameter in magnetic field; Used electric current is an exchange current, and the parameter of exchange current is: strength of current 10A, and power frequency is: 500Hz; Used magnetic field is static magnetic field, and the magnetic induction density in magnetic field is 5T, and the time that electric current and magnetic field act on simultaneously is 10min.
Embodiment 6: preparation ZrB
2
Particle enhanced aluminum-based composite material
Starting material that present embodiment is used and preparation process and embodiment 1 are identical, and different is that the electric current that adopts is different with the type and the parameter in magnetic field; Used electric current is a galvanic current, and the parameter of galvanic current is: strength of current 10A; Used magnetic field is alternating magnetic field, and the magnetic induction density in magnetic field is 2T, and field frequency is: the time that 50Hz electric current and magnetic field act on simultaneously is 2min.
Embodiment 7: preparation (Al
3
Zr
(s)
+ ZrB
2 (s)
) the particle reinforced Al matrix composite
Starting material that present embodiment is used and preparation process and embodiment 2 are identical, and different is that the electric current that adopts is different with the parameter in magnetic field; Used electric current is a galvanic current, and the parameter of galvanic current is: strength of current 1000A; Used magnetic field is alternating magnetic field, and the magnetic induction density in magnetic field is 0.02T, and field frequency is: the time that 500Hz electric current and magnetic field act on simultaneously is 3min.
Claims (5)
1. the method for a synthetic particle enhanced aluminum-based composite material under electric current and magnetic field compound action, comprise and to adjust to reacting initial temperature after the refining of aluminum or aluminum alloy melt, adding can generate particle reactant mutually with the melt in situ reaction and carry out building-up reactions, question response finishes, pour into a mould after leaving standstill teeming temperature, its method feature is: react in position in the building-up process and to feed electric current and simultaneously melt is applied magnetic field treatment in melt, apply alternating magnetic field when adopting galvanic current simultaneously, apply static magnetic field when adopting exchange current simultaneously.
2. a kind of method of under electric current and magnetic field compound action, synthesizing particle enhanced aluminum-based composite material as claimed in claim 1, it is characterized in that: adopt exchange current and static magnetic field compound tense, be that the electric current that feeds in the melt is an exchange current, strength of current is 10-1000A, power frequency is 50-500Hz, static magnetic field is adopted in corresponding with it magnetic field, and the intensity in magnetic field is 0.1-5T.
3. a kind of method of under electric current and magnetic field compound action, synthesizing particle enhanced aluminum-based composite material as claimed in claim 1, it is characterized in that: adopt galvanic current and alternating magnetic field compound tense, be that the electric current that feeds in the melt is a galvanic current, strength of current is 10-1000A, alternating magnetic field is adopted in corresponding with it magnetic field, the intensity in magnetic field is 0.02-2T, and the frequency in magnetic field is 50-500Hz.
4. a kind of method of synthesizing particle enhanced aluminum-based composite material under electric current and magnetic field compound action as claimed in claim 1, it is characterized in that: the time that described electric current and magnetic field compound action are handled melt is 2-10min.
5. a kind of method of synthesizing particle enhanced aluminum-based composite material under electric current and magnetic field compound action as claimed in claim 1 may further comprise the steps:
A) in the reaction synthesising container that the thermal insulation fire-resistant material is made the melting of matrix metal aluminum or aluminum alloy, refining are adjusted to reacting initial temperature after pulling out slag, adding can generate enhanced granule reactant mutually with the molten aluminium reaction in, and stirs;
B) electric current of input melt is introduced by the electrode of two parallel insertions on bottom, molten bath that is installed in the reaction synthesising container respectively and top, molten bath, magnetic field is installed in the outside of reaction synthesising container, electrode is inserted melt, connect the power supply and the magnetic field of input melt electric current then successively, and adjust current parameters and magnetic field parameter to setting range;
C) when adopting exchange current and static magnetic field compound tense, strength of current is 10-1000A, and power frequency is 50-500Hz, and the intensity in magnetic field is 0.1-5.0T;
D) when adopting galvanic current and alternating magnetic field compound tense, strength of current is 10-1000A, and the intensity in magnetic field is 0.02-2.0T, and the frequency in magnetic field is 50-500Hz;
E) time of electric current and magnetic field compound action processing melt is 2-10min, and question response finishes, and closes the power supply and the magnetic field power supply of received current successively, and melt is poured into a mould after leaving standstill teeming temperature, makes matrix material.
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|---|---|---|---|
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|---|---|---|---|
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|---|---|---|---|---|
| CN102864423A (en) * | 2012-09-03 | 2013-01-09 | 上海大学 | Preparation method of hafnium-indium-zinc oxide target material |
| CN103624240A (en) * | 2013-11-22 | 2014-03-12 | 江苏大学 | Method for casting high-boron high-speed steel roll centrifugally under composite action of magnet field and electric field |
| CN103624230A (en) * | 2013-11-22 | 2014-03-12 | 江苏大学 | Method for centrifugal casting of high-speed steel roller under combined external field |
| CN106756192A (en) * | 2016-12-16 | 2017-05-31 | 镇江创智特种合金科技发展有限公司 | A kind of magnetochemistry method for preparing super modeling aluminum matrix composite in situ |
| CN109128058A (en) * | 2018-10-30 | 2019-01-04 | 辽宁科技大学 | The device and method of Composite Field casting production ODS steel |
| US11141786B2 (en) * | 2016-04-01 | 2021-10-12 | Lg Chem, Ltd. | Method for manufacturing metal foam |
| US11577315B2 (en) * | 2016-04-01 | 2023-02-14 | Lg Chem, Ltd. | 3D printing method |
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| CN101391290A (en) * | 2008-11-05 | 2009-03-25 | 江苏大学 | Method for synthesizing metal matrix composition using metal reaction under the coupling action of magnetic field and ultrasonic field |
| CN101956120A (en) * | 2010-10-12 | 2011-01-26 | 江苏大学 | Method and device for preparing nanoparticle reinforced aluminum base composite material |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864423A (en) * | 2012-09-03 | 2013-01-09 | 上海大学 | Preparation method of hafnium-indium-zinc oxide target material |
| CN103624240A (en) * | 2013-11-22 | 2014-03-12 | 江苏大学 | Method for casting high-boron high-speed steel roll centrifugally under composite action of magnet field and electric field |
| CN103624230A (en) * | 2013-11-22 | 2014-03-12 | 江苏大学 | Method for centrifugal casting of high-speed steel roller under combined external field |
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| CN103624240B (en) * | 2013-11-22 | 2016-04-27 | 江苏大学 | The method of centrifugal casting high boron high-speed steel roll under the electric field compound action of magnetic field |
| US11141786B2 (en) * | 2016-04-01 | 2021-10-12 | Lg Chem, Ltd. | Method for manufacturing metal foam |
| US11577315B2 (en) * | 2016-04-01 | 2023-02-14 | Lg Chem, Ltd. | 3D printing method |
| CN106756192A (en) * | 2016-12-16 | 2017-05-31 | 镇江创智特种合金科技发展有限公司 | A kind of magnetochemistry method for preparing super modeling aluminum matrix composite in situ |
| CN109128058A (en) * | 2018-10-30 | 2019-01-04 | 辽宁科技大学 | The device and method of Composite Field casting production ODS steel |
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